The skyrocketing value of their energy assets is associated with the increased oil prices.

In 12 months, the richest Russian businessmen have boosted their wealth more than businessmen in any other country, RBC said citing Bloomberg. The total fortune of the ten wealthiest Russians has increased by 10.8% this year, whereas the 10 wealthiest Americans can only boast a 7.5% increase. The richest Brits have become just 3.4% richer, while Chinese billionaires have lost over 27% of their fortune in a year.

According to Bloomberg estimates, the wealth of Leonid Mikhelson has increased in value by $4.3 billion (and is now estimated at $21 billion); Gennady Timchenko has $4 billion more than a year ago, while Vagit Alekperov has made another $3.5 billion. The skyrocketing value of their energy assets is associated with the increased oil prices. Andrei Melnichenko made $2.27 billion more this year, Roman Abramovich has become $1.91 billion wealthier, and Vladimir Lisin is now worth $1.88 billion more.